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Anti-reflection coating solution suitable for double-layer coating and its preparation method and application

A coating solution and anti-reflection technology, applied in coating, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems affecting the power generation of photovoltaic modules, achieve excellent dirt resistance and weather resistance, moderate porosity, The effect of high production efficiency

Active Publication Date: 2022-02-15
WUJIANG CSG GLASS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, Chinese patent 201610333647.5 provides a method for preparing a high-strength double-layer anti-reflection film. In this invention, a high-refractive titanium dioxide sol and a low-refractive silica sol are prepared respectively, and then a layer of high Titanium dioxide sol with refractive index, after forming a titanium oxide film, coat a layer of silicon dioxide film on its surface, although the double-layer SiO2 obtained by this method 2 -TiO 2 The anti-reflection coating has a simple process and can increase the absorption of ultraviolet light, but it will inhibit the transmittance of infrared light, affect the power generation of photovoltaic modules, and cause counterproductive effects

Method used

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  • Anti-reflection coating solution suitable for double-layer coating and its preparation method and application
  • Anti-reflection coating solution suitable for double-layer coating and its preparation method and application
  • Anti-reflection coating solution suitable for double-layer coating and its preparation method and application

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Effect test

Embodiment 1

[0043] A kind of broadband high anti-reflection double-layer coating anti-reflection coating solution for photovoltaic glass of the present invention, wherein the preparation method of the bottom coating solution is as follows:

[0044] 1) Preparation of silane polymer in bottom coating solution:

[0045] 1.1) Preparation of silane polymer: Add 30 parts of ethyl orthosilicate, 5 parts of methyltriethoxysilane, 60 parts of isopropanol, 13 parts of water, and 0.01 part of nitric acid into the reaction kettle while stirring, and start Heating, be warming up to 60 DEG C, react 4h, cool down after reaction finishes, for subsequent use.

[0046] 1.2) Preparation of bottom coating solution:

[0047] In terms of parts by mass, 25 parts of the above-mentioned silane polymer, 2 parts of propylene glycol methyl ether acetate, and 54 parts of isopropanol were added while stirring, and the materials were mixed evenly by stirring to obtain the bottom layer coating solution.

[0048] 2) Th...

Embodiment 2

[0057] A kind of broadband high anti-reflection double-layer coating anti-reflection coating solution for photovoltaic glass of the present invention, wherein the preparation method of the bottom coating solution is as follows:

[0058] 1) Preparation of silane polymer for bottom coating solution:

[0059] 1.1) Preparation of silane polymer: Add 40 parts of tetraethyl orthosilicate, 76 parts of isopropanol, 16 parts of water, and 0.05 parts of hydrochloric acid into the reactor in turn while stirring, turn on the heating and raise the temperature to 50°C, react for 5 hours, and react When finished, cool down and set aside.

[0060] 1.2) Preparation of bottom coating solution:

[0061] According to mass percentage, 30 parts of the above-mentioned silane polymer, 62 parts of isopropanol and 4 parts of propylene glycol butyl ether were added while stirring, and the materials were mixed evenly, and discharged to obtain the bottom layer coating solution.

[0062] 2) The preparati...

Embodiment 3

[0092] After cleaning the photovoltaic glass, first coat a layer of bottom coating solution on the surface of the glass to form a bottom coating layer. layer of anti-reflection coating. Anti-reflection, dirt resistance and weather resistance tests were carried out on the coated glass, the results are shown in the table below:

[0093]

[0094] Remarks: Dirt resistance is divided into grades 1-5 based on the light weight of the imprint left on the membrane surface. The higher the grade, the worse the dirt resistance, and ≤3 grades are qualified.

[0095] The test results in the above table show that the double-coated glass obtained by the anti-reflection solution prepared by the method of the present invention has higher light transmittance, excellent dirt resistance and weather resistance; and can significantly improve the light transmittance of long-wave band (infrared) rate, that is, to increase the absorption of ultraviolet and infrared light at the same time, it can be...

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Abstract

The invention discloses an anti-reflection coating solution suitable for double-layer coating, which comprises a bottom coating solution and a surface coating solution. In parts by weight, the bottom coating solution includes 20-40 parts of silane polymer and 50-80 parts solvent, the surface coating solution includes 20-30 parts of silica sol, 5-10 parts of nano-microspheres and 45-75 parts of solvent; the nano-microspheres are prepared by emulsion polymerization; the nano-microspheres The average particle size of the microspheres in the microspheres is less than or equal to 100 nm. In the anti-reflection coating solution of the present invention, two different anti-reflection coating solutions are coated on the glass surface to form high-transparency anti-reflection coated glass, and the light transmittance of the conventional single-layer coated glass is increased by 0.3%. Control the mass ratio of silica sol to nano-microspheres, so that the porosity of the film layer of the photovoltaic coated glass obtained from the double-layer coating solution is moderate, ensuring that the film layer has high anti-reflection and weather resistance. The anti-reflection reaches 2.60%, the surface of the film layer is closed, and it has excellent dirt resistance and weather resistance.

Description

technical field [0001] The invention relates to the technical field of solar cells and coating solutions, in particular to an anti-reflection coating solution suitable for double-layer coating, a preparation method of the anti-reflection coating solution and an application of the anti-reflection coating solution in photovoltaic glass. Background technique [0002] With the rapid development of the economy, the intensification of energy consumption and environmental problems, the development and use of green energy has become a hot spot. The development potential of solar energy is huge and the development prospect is broad, which has attracted much attention. [0003] The photoelectric effect of solar cells can convert light energy into electrical energy, so improving the conversion efficiency is the focus of research. In addition to crystalline silicon technology, the photovoltaic glass used as the cover plate of photovoltaic modules is also one of the important factors aff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D5/00C09D1/00C09D7/65C03C17/34
CPCC09D183/04C09D5/002C09D1/00C09D7/65C03C17/3405C03C2217/45C03C2217/47C03C2217/734C03C2218/11Y02P70/50
Inventor 刘迪何蒙柳生刘明刚陈志鸿何进乔仁静
Owner WUJIANG CSG GLASS CO LTD
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